Clas august sundberg



(No Model.)

O.A.SUNDBERG. REGULATING DEVICE FOR GAS 0R PETROLEUM MACHINES.

No. 594,042. Patented Nov. 23,1897.

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OLAS AUGUST SUNDBERG, OF STOOKHOLM, SWEDEN.

REGULATING DEVICE FOR GAS OR PETROLEUM MACHINES.

SPECIFICATION forming part of Letters Patent No. 594,042, dated November23, 1897. Application filed April 8, 1897- sermINO. 681,295. (No model.)

' To all whom it may concern.-

Be it known that I, CLAS AUGUST SUND- BERG, a subject of the King ofSweden and Norway,.residin g at Stockholm, Sweden, have invented certainnew and useful Improvements in Regulating Devices for Gas or PetroleumMachines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

My invention relates to mechanism for regulating the opening and closingof valves, and more particularly to the feed-valves for naphtha, gas,and similar engines where the impelling fluid is to be fed not at theend of each stroke, but at the end of apredetermined number of strokesof the piston; and it further provides for the geverning of the engineby novel mechanism operating between the feed-valve spindle and the endof the eccentric-rod by the inertia of the reciprocating parts, and inthe construction, combination, and arrangement of parts hereinafterdescribed, and particularly pointed out in the claims.

In the drawings, Figure l is a side view of my mechanism, partly insection. Fig. 2 shows the teeth on the cylindrical tappet developed,with successive positions of the reciprocating tappetteeth shown indotted lines. Fig. 3 is a detail showing the part K in elevation, andFig. 4 is an elevation of the governing-weight element.

Like letters of reference indicate like parts throughout the severalviews.

13 is a valve rod or spindle having reciprocating motion in its supportB, and to this support is fastened a coil-spring E, which serves to keepthe valve normally closed and whose end bears on a cylindrical tappet E,secured to the end of the valve-spindle by a pin F.

O is a fixed support serving as a guide for the spindle A and having onits upper face a series of triangular teeth 0, that engage similar teethD on the lower end of the reciprocating tappet element D, whichisrevolublymounted on the end of the spindle A.

The upper end of the tappet element D is also provided with teeth Dhaving wedge-shaped ends or crowns that engage complementary recesses Ein the crowns of teeth E of -the upper tappet-cylinder E. A portion ofthe end of the spindle A is cut away, so as to form two shoulders H andI, the lower one, H, of which is provided with a buffer-spring y andtension-nut y.

The eccentric-rod A has hinged to its end a bell-crank lever K, whoselonger arm normally engages the shoulder H in the spindle A and therebylifts the tappet D; butwhen the engine is running too fast-2'. 6., abovenormalthis arm of the bell-crank lever engages the shoulder I, or,rather, slides on the surface between H and I, and does not lift thespindle A with its attached tappet-cylinder D. The shorter arm of thebell-crank lever has hinged to it at P a weighted anglelever' W, whosevertical arm 0 has a pin R, that serves to hold it in engagement with abufler-sprin g R, adj ustably secured in the eccentric-rod by a screw Sand nut T, while the free end of the arm 0 engages a shoulder U on anarm or guide V, which is yieldingly held in the fixed support Z by a pinX and spring as. The support Z also serves to guide the end of 'theeccentric-rod A. The opening of the valve at the end of a predeterminednumber of strokes is dependent on the formation and relative arrangementof the tappet-teeth.

I In Fig. 2 I have shown the surfaces of the respective tappet-cylindersdeveloped and in dotted lines the successive positions of a pair ofteeth of the reciprocating tappet D, which is to open a valve at everyother stroke of the eccentric when the engine is running normal.Supposing the eccentric just about to begin its stroke to open thevalve,then the several sets of tappet-teeth will be in the position shown infull lines, Fig. 2. On moving forward the teeth D of the reciprocatingtappet D will be moved to'contact with the teeth E on the end of thevalve-spindle, as shown in dotted lines at 4. will cause the teeth D tostrike fully into the notches E in the crowns-of the teeth E by virtueof the beveled surface in contact, it being remembered that the elementD is revolubly mounted on the end of the spindle A, and will turn thetappet D slightly on its axis The continued movement IOO and throw itstriangular teeth D out of register with the teeth 0 on the support orguide 0, as shown at 5. The continued movement of the eccentric will nowlift the tappet E and valve-spindle to open the valve, as shown in theposition marked 3. Now on the return stroke, the triangular teeth beingout of register, the reciprocating tappet D will drop to position shownat 6, contact with and slide down the teeth 0, and be turned on its axisthe distance of one tooth to the position marked 7. .The next forwardstroke brings the upper teeth D into the position marked 8, when theystrike the beveled facesF of the teeth E slide over these surfaces intothe spaces between the teeth E and into the position marked 9, thetriangular teeth being consequently again thrown out of register, andthe continued stroke of the eccentric simply forces the teeth D up intothe spaces between the teeth E without lifting the valve. On the returnthe triangular teeth again slide over one another, as above described,and the reciprocating tappet is ready to lift the valve again.

For governing the engine the mechanism between the end of theeccentric-rod A and spindle A is used and operates as follows: The toorapid motion of the eccentric-rod will cause the weight N, inconsequence of its inertia, to leave its normal position and to fallback to said normal position after the rod A has completed its stroke.Hence the arm 0 does not engage the shoulder U, but drops down along theelement V, causing the longer arm of the bell-crank lever K to leave theshoulder II and ride on the surface between H and I, thus preventing theoperation of the spindle A and tappet D and leaving the valve closed.Upon resuming normal speed the arm 0 will again engage the shoulderU andthrow the longer arm of the bell-crank lever K again into the engagementwith the shoulder H in position for operating the tappet mechanism andvalve.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

1. A spring-closed valve, its spindle end provided with a toothed tappetadapted to have axial motion thereon, in combination with a revolubletappetcylinder provided with teeth at either end, a guide for thespindle of the revoluble tappet having teeth on its face, said revolubletappet adapted to be revolved by engagement with the aforementionedtoothed tappet and the teeth on the guide, substantially as and for thepurpose set forth.

2. A spring-closed valve provided with an axially-movable toothed tappeton its spindle end, in combination with a double ended toothed tappetrevoluble on its spindle, a guide for said spindle having teeth on itsface, the teeth of these respective cooperating elements so formed as toturn the revoluble tappet by its alternate engagement with theguide-face and axially-movable tappet, substantially as and for thepurpose set forth.

3. In a valve-operating mechanism substantially as described, atooth-faced guide, an axially-movable tappet provided with a set ofteeth out of register with the series of teeth on the guide face, theintermediate double-ended toothed tappet adapted to alternately engageboth series of teeth and thereby receive a step-by-step rotation, forthe purpose set forth.

4. In a valve-operating mechanism, a governor comprising a bell-cranklever hinged to the end of the eccentric-rod, a weight hinged to one armof said lever, an arm perpendicular to said weight and normally havingsliding contact with a guide-piece, substantially as set forth.

5. In a valve-operating mechanisnya governor comprising a hell-cranklever hinged to the end of the eccentric-rod, whose longerarm operates atappet when running normal, a weight hinged to its shorter arm, an armextending from said weight, abuffer-spring between the eccentric-rod andthe aforementioned arm, and a yielding guide, provided with a notch atthe end of a guide-surface thereon, into which the arm extending fromthe weight slides, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CLAS AUGUST SUNDBERG.

4 l/Vitnesses: I

TH, WAWRINSKI, KoUv. DAHLovIsT.

